1967 CB450K0 Black Bomber Rebuild - By Royhall

[AshimotoK0]

Sorry Mo I don't have a spare set of springs. I knew I had two bags and thought there was a set in each unfortunately there's only one in each bag. They are available from 4into1 in the States but the postage is the problem. If there are other parts you need you could combine them to make it affordable.

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Sorry... Bit of a blank from me too Mo as the NOS needles I have are from another Honda model.
Probably got two decent used and not bent needles you can have though once I dig them out.

[mo goldie]

Hi Roy & Ash

Oh yes bad news then oh well ......... worth a look ha..... I have took the carbs back off now so if you got a couple of Needles Ash or anything else would be better than the ones with clips do you think ?

and the link you sent for the regulator it looks the same as the one`s used on my Kawasaki KH400 and I think I have two of them somewhere but have Not got a clue as to how to put one of them in the wiring system..... Not my thing Electrics really....

still can`t find out the whereabouts of that pinkish looking wire go`s on the wiring loom thats comes out were the battery is to go to the old rectifier ?
 

   

[AshimotoK0]

The ORIGINAL pink wiring is the output from the lighting coils of the alternator that goes to the lighting/ignition switch and when the headlight are switched on, this connects the pink wire to the yellow wire so that all of the coils are fed into the rectifier to boost the night time charging.It's basically like the circuit in the diagram earlier. Trace the pink wire on the original loom back to the pink wire on the ignition switch and you should have continuity.With the ignition switch disconnected, you should have continuity between the pink wire on the the switch and the yellow wire when the switch is in the lighting position.

[mo goldie]

Hi Ash

So if I do this and can I join the yellow and pink together at where it comes out of the loom in near the rectifier and put the both into the rectifier .......... if so do I have to take the wires out of the Ign switch ?


Oh the other thing you said about the magnetism well the rotor it has a newer one on from a K5 and a spanner sticks to it like Glue and hard to pull off so that should be ok ....as far as i Know anyway.
 

[AshimotoK0]

Hi Ash

So if I do this and can I join the yellow and pink together at where it comes out of the loom in near the rectifier and put the both into the rectifier .......... if so do I have to take the wires out of the Ign switch ?


Oh the other thing you said about the magnetism well the rotor it has a newer one on from a K5 and a spanner sticks to it like Glue and hard to pull off so that should be ok ....as far as i Know anyway.

No, you wouldn't have to do anything at the ignition switch. If you have decent magnetism in the rotor though you should get enough charge without joining the wires. Might be worth a quick try though to see if you get decent charge with the yellow connected to pink (original loom colours)

[mo goldie]

yes Ok

i will have a look tomorrow and disconnect the ign switch and see if I get continuity from that pink to where it comes out of the loom at the ign switch......

are these kits any good as they dont look to have the needle clips like the ones I have ? but I would still use my old jets tho ?

https://www.ebay.co.uk/itm/223708031717?itmmeta=01HRNCXPKYDYM6MWVK6ENEZVH4&hash=item341609aae5:g:vukAAOSwRLxlDb2U&itmprp=enc%3AAQAIAAAAwCzwyvR0YLI8kDlFzJXTXSasVL9%2FrKcAIsP%2FJupqpnOrZ5JmY25T66Rl8LHMSCu62RhBzAgwt1SfPXtO9JwUhRm0QT1m2hSZ9KKxY3UCuP2ES32mLv2wrxA4QRWbu8aROYWtfu4kqcUDg3JdvlWmc%2FJfYIw76eXoREGhVKj%2FqJjlt95cJijLCiTZNpcNCJRMc4pscMgzJ2SPtrj09D8h7ogxLbAWZye5mTh%2Bs%2FeQwu9YHQS0JDHrKh0ewYUMejjqmA%3D%3D%7Ctkp%3ABk9SR5Lq9qzFYw

[AshimotoK0]

yes Ok

i will have a look tomorrow and disconnect the ign switch and see if I get continuity from that pink to where it comes out of the loom at the ign switch......

are these kits any good as they dont look to have the needle clips like the ones I have ? but I would still use my old jets tho ?

https://www.ebay.co.uk/itm/223708031717?itmmeta=01HRNCXPKYDYM6MWVK6ENEZVH4&hash=item341609aae5:g:vukAAOSwRLxlDb2U&itmprp=enc%3AAQAIAAAAwCzwyvR0YLI8kDlFzJXTXSasVL9%2FrKcAIsP%2FJupqpnOrZ5JmY25T66Rl8LHMSCu62RhBzAgwt1SfPXtO9JwUhRm0QT1m2hSZ9KKxY3UCuP2ES32mLv2wrxA4QRWbu8aROYWtfu4kqcUDg3JdvlWmc%2FJfYIw76eXoREGhVKj%2FqJjlt95cJijLCiTZNpcNCJRMc4pscMgzJ2SPtrj09D8h7ogxLbAWZye5mTh%2Bs%2FeQwu9YHQS0JDHrKh0ewYUMejjqmA%3D%3D%7Ctkp%3ABk9SR5Lq9qzFYw

No experience  of them Mo but Roy mentioned them earlier as getting good reports and I think he got some. I always tend to use Keihin either new or used.

A bit worrying that they say 1965-1968 as 68 carbs are definitely different to the earlier 4-speed carbs.

[McCabe-Thiele (Ted)]

Those needles in the listing photo don't have any needle clip grooves - presumably the fitting is different to my 500?

[AshimotoK0]

Those needles in the listing photo don't have any needle clip grooves - presumably the fitting is different to my 500?

Totally different arrangement to 500/4 .. fit into the CV piston not a conventional slide.

[royhall]

Never used them (yet) but they do get very good reviews. Just double check they are for the correct carbs, these are for genuine Bomber carbs if that's what your running.

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[AshimotoK0]

Never used them (yet) but they do get very good reviews. Just double check they are for the correct carbs, these are for genuine Bomber carbs if that's what your running.

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How come they list the same set for the '68 Roy.. presumably a 5 speed? Looks a bit confusing to me.

[royhall]

Genuine Bomber carbs are definitely different. Will take some photos later. This is why they want £300 for a pair of filthy probably worn out carbs on eBay.

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[mo goldie]

Hi guy`s

Well here are the results from my wires, done what you said Ash see what you
continuity.
try pink to pink No ........... brown to pink yes........ yellow and brown yes..... strange but I am confused Now

oh Yes Roy Carbs are both 14c so I ordered a pair but said postage going to take till April to may
 

[AshimotoK0]

If you are checking the continuity of the wiring loom Mo you need to disconnect both the rectifier and the alternator stator.
You then need to check for continuity of the yellow and pink wires at the switch.

Disconnect battery then With switch in OFF position

i.e. probe on the yellow wire at the loom end connector and other probe on yellow wire at the switch

i.e.  probe on the pink  wire at the loom end connector and other probe on pink wire at the switch

With switch in lighting position
You should have continuity between the pink and yellow wires.

[mo goldie]

Hi Ash

yes I will check that out thanks again..got to go out now but should do that later on and let you Know.

Cheers
Mo